Using Advanced Search Operators when you search the internet can help you get more useful and meaningful information more quickly.

Printable Quick Guide

(right click to open in a new tab or window)

Other Guides

Google's Advanced Search Operators

This page lists the most common advanced search operators that you can use in Google's search bar.
See also Google's more search help and Google's printable Cheat Sheet

Even More Google Advanced Search Operators by googleguide.com

This list is more extensive and has examples.

Google's Search Shortcuts

This page has pre-designed search boxes that you can use to check definitions, public data, etc. on Google.